Improvement in ditching-machines



S. E. TODD.

Improvement in Ditching-Machines.

Patented Nov. 12,1872.

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UNITED STATES PATENT Grrtcn.

SERENO EDWARDS TODD, OF BRODKLYN, NEW YORK.

IMPROVEMENT IN DlTCHlNG-MACHINES.

Specification forming part of Letters Patent No. 133,069, dated November 1'3, 1872.

To all whom it may concern:

Be itknown that I, SERENo EDWARDS ToDD, of Brooklyn, Kings county, Long Island, State of New York, U. S. A., have invented certain Improvements in Ditching-Machines, of which the following is a specification:

My invention relates to a ditching-machine so constructed that it will, when applied, make a ditch of any required depth without removing the earth to the surface; and it consists in an instrument, A B 0, having two parts, viz, a wedge, G, and rammer B, and which I term a wedge-rammer. Any desired weight may be given to the wedge-rammer by simply adding to the height at A.

The wedge-rammer is secured in a framework, D, and has a suitable arrangementof rope and pulleys attached to it, by which it is operated.

In practice, the wedge-rammer is drawn up by the rope and pulleys to a proper height, and on its falling an opening is made in the ground in shape the counterpart of the lower edge B and O. The framc-workD is then moved forward the length of the rammer B, when an operation similar to the first is performed. The earth is driven into the sides of the ditch so made. Thus, by a system of wedge and rammer compressions, a ditch is quickly formed.

In constructing my wedge-rammer I form the wedge portion at an angle to the rammer B of about forty-five degrees, more or less. The \vedge-rainmer may be attached to a shaft or piston-rod and used by steam-power. 

